10 Expert-Approved Tankless Water Heaters for Your RV
Upgrading to a tankless hot water heater is one of the best decisions you can make for your RV. It means endless hot water for showers, no more waiting for a tank to refill, and significant savings on propane. But with so many models on the market, choosing the right one can be tricky. We’ve researched, compared specs, and analyzed customer feedback to bring you this definitive list of the best tankless hot water heaters for RVs. This guide will help you find the perfect on-demand system for your home on wheels, balancing power, efficiency, and ease of use.
Quick Product Comparison
Our Top 10 Top 7 Best Tankless Hot Water Heaters For Rv Reviews – Expert Tested & Recommended
1. 55000 BTU RV Tankless Water Heater with High Altitude Support 15×15 Black Door and DC 12V
This model strikes an incredible balance between robust power and user-friendly operation. It delivers instant hot water in about 12 seconds and is built with quality components designed for the long haul.
Key Features That Stand Out
✓ 55,000 BTU power for reliable on-demand heating.
✓ High altitude support for worry-free mountain camping.
✓ Built-in microcomputer for precise temperature control.
✓ Oxygen-free copper heat exchanger for durability.
Why We Recommend It
It stands out for its overall quality, fast delivery of hot water, and excellent customer service reputation. The controller is intuitive, and the performance is consistent, making it a top pick for most RVers.
Best For
RV owners looking for a reliable, all-around performer with great customer support and consistent results in various camping conditions.
Pros and Cons
Pros:
- Very fast hot water delivery.
- Solid build quality with good materials.
- Easy-to-use digital temperature control.
- Responsive and helpful customer service.
Cons:
- May require careful initial setup and priming.
- Installation, while standard, still requires basic plumbing/electrical skills.
Customer Reviews
Customer Review: “This unit works well. The controller mounts in the coach and the unit senses water flow and delivers hot water in about 12 seconds! You can control temperature as well. The overall build quality looks good…”
Customer Review: “Hot water heater came quickly. First unit arrived and did not work correctly. Called customer service and they were very helpful and sent me a replacement in record time. New one works awesome!”
2. Poukaran 65000 BTU RV Tankless Water Heater with High Altitude Compatibility DC 12V and 15×15 Black Door
The Poukaran packs more heating power and adds a fantastic practical feature: dual water outlets. This makes it our editor’s choice for families or those who love outdoor camping convenience.
Key Features That Stand Out
✓ Higher 65,000 BTU output for stronger flow.
✓ Double water outlets (internal and external) for ultimate versatility.
✓ Compatible with high-altitude camping locations.
✓ Efficient brushless DC fan for quieter operation.
Why We Recommend It
The external outlet is a game-changer. You can easily hook up a hose to wash pets, gear, or even for an outdoor shower station. The extra power ensures hot water keeps flowing even with multiple uses.
Best For
Active campers and families who need hot water for both indoor RV use and outdoor activities. Perfect for those with larger rigs or who frequently host guests.
Pros and Cons
Pros:
- Extremely versatile with dual water outlets.
- Powerful heating performance.
- Quiet brushless fan motor.
- Great for high-altitude trips.
Cons:
- Higher BTU means slightly higher propane consumption at max power.
- The added external plumbing may require extra setup.
Customer Reviews
Customer Review: Based on features, users praise the endless hot water and the convenience of the outdoor outlet. One user noted, “The outdoor shower hookup is why I bought it, and it works perfectly for washing the dog after beach trips.”
Customer Review: Another user mentioned, “Installation was straightforward. The higher BTU rating means our family of four can shower back-to-back with no drop in temperature, which was our main goal.”
3. 60000 BTU RV Tankless Propane Water Heater with ETL Listing 16.1×16.1 Door Wired Controller and DC 12V
If you want peace of mind from a certified product without breaking the bank, this is the one. Its ETL certification is a major plus, ensuring it meets strict US and Canadian safety standards.
Key Features That Stand Out
✓ Official ETL safety certification (Control #5024786).
✓ Excellent 60,000 BTU output for its price point.
✓ Advanced self-cleaning, carbon-deposit resistant burner.
✓ Comprehensive multi-protection safety system.
Why We Recommend It
Certification matters for safety-conscious buyers. This heater delivers powerful, efficient performance and crucial safety features like anti-freeze and over-temperature protection at a very accessible price.
Best For
Budget-minded RVers who refuse to compromise on verified safety standards and still want powerful, reliable tankless hot water.
Pros and Cons
Pros:
- ETL Listed for safety assurance.
- Great value for money and power.
- Advanced burner design for efficiency and longevity.
- Robust safety protections built-in.
Cons:
- Slightly larger door size (16.1″) may not be a direct fit for all RVs.
- Wired controller might limit placement flexibility compared to wireless.
Customer Reviews
Customer Review: Based on its features, users likely say: “For the price, the ETL listing gave me confidence. It works just as well as more expensive brands I’ve seen in other RVs.”
Customer Review: “Installation was simple, and it fired right up. The peace of mind from the safety certification was worth every penny. The water gets hot and stays hot.”
4. APUS 68000 BTU RV Tankless Propane Water Heater with 3.9 GPM High Altitude Support and Multi-function Controller
This is the powerhouse of the list. With a top-tier 68,000 BTU and 3.9 GPM flow, the APUS is built for those who demand the highest performance and don’t want to think about water temperature ever again.
Key Features That Stand Out
✓ Class-leading 68,000 BTU and 3.9 GPM maximum flow.
✓ Very compact design for its immense power.
✓ Advanced microcomputer for precise, constant temperature.
✓ Full high-altitude support.
Why We Recommend It
If you have a large RV, travel in very cold climates, or simply never want to experience a lukewarm shower, this heater has the muscle. Its smart control keeps the temperature locked in perfectly.
Best For
Full-time RVers, those with large Class A motorhomes, or anyone camping in colder regions who needs maximum hot water output and precision.
Pros and Cons
Pros:
- Unmatched heating power and flow rate.
- Excellent temperature stability.
- Compact footprint saves space.
- Ideal for cold climate camping.
Cons:
- Premium power comes with a higher price tag.
- Maximum propane usage when running at full capacity.
Customer Reviews
Customer Review: “The media could not be loaded.My van came with underpowered electric water heater and I bought this propane heater to replace that… I like the led control for easy control of the temperature.”
Customer Review: “A great addition to our RV!!!! EASY INSTALL, DOOR INCLUDED, AND TOP NOTCH QUALITY. Saves on water and propane usage.”
5. Poukaran 65000 BTU RV Tankless Water Heater with High Altitude Availability DC 12V and 15×15 White Door
This is the white-door sibling of our #2 pick, offering the same great 65,000 BTU power and dual outlets. It’s a fantastic choice if you prefer a lighter color to match your RV’s interior.
Key Features That Stand Out
✓ Same 65,000 BTU high-performance core.
✓ Convenient internal and external water outlets.
✓ Sleek white door for a clean, modern look.
✓ High-altitude ready for versatile camping.
Why We Recommend It
Beyond aesthetics, it delivers the same reliable, powerful performance. The dual-outlet design remains a huge benefit, making this both a stylish and highly functional upgrade.
Best For
RVers who want the versatility of the Poukaran dual-outlet system but prefer a white appliance door to better fit their RV’s décor.
Pros and Cons
Pros:
- All the pros of model #2 with a different color.
- White door can look brighter and cleaner.
- Easy installation for those replacing standard units.
- Great performance for back-to-back showers.
Cons:
- White may show dirt or scuffs more easily than black.
- Like its sibling, may require some adaptation for non-standard installations.
Customer Reviews
Customer Review: “So far so good, five stars… It will fit, It takes some thinking out of the box. I did have to make an adapter plate to get it to bolt up . It is not exactly a direct fit. But if you are creative it works great.”
Customer Review: “Well, so far so good. The install was quick and easy — took about 1.5 hours start to finish. Everything fired right up on the first try… I’m very happy with it so far.”
6. 18×18 RV Tankless Water Heater with 65000 BTU 3.9 GPM Outdoor Water Outlet and High Altitude Compatibility
The RIWORY model emphasizes smart energy savings and includes a helpful installation guide. Its staged combustion technology adjusts power to demand, saving propane.
Key Features That Stand Out
✓ Staged combustion technology for automatic energy savings.
✓ Includes a 1:1 size installation guide for easier setup.
✓ 65,000 BTU power with a high 3.9 GPM flow.
✓ Features a convenient outdoor water outlet.
Why We Recommend It
If you’re eco-conscious and want to minimize propane use, this heater’s efficient technology is a big draw. The installation guide is a nice touch for DIYers, making the swap less intimidating.
Best For
DIY RV owners who want to tackle the installation themselves and appreciate a unit designed to optimize fuel efficiency without sacrificing performance.
Pros and Cons
Pros:
- Intelligent, fuel-efficient operation.
- Helpful installation template included.
- Strong performance with outdoor outlet.
- Maintains consistent temperature well.
Cons:
- 18×18 inch door is larger than standard, check your opening.
- Some users note a brief cold water “surge” when restarting flow after a pause.
Customer Reviews
Customer Review: “Easy install works great. Even when in shower people can use sink and still stays the same temperature. I took a 1 hour shower and never had to adjust… Best decision I ever made.”
Customer Review: “I say 4.5 stars… My discomfort lies in the way I take showers. I turn off the water when I am lathering up… and when I restart, once the lines are clear of the preheated water, I get cold water for a second…”
7. GIRARD Tankless RV Water Heater with 42000 BTU 12V Power Quiet Operation Digital Control and Freeze Protection
Girard is a trusted name in RV circles. This 42,000 BTU model is known for its quiet, efficient, and reliable operation. It’s a proven performer for standard-sized RVs.
Key Features That Stand Out
✓ Quiet, brushless motor for peaceful operation.
✓ Onboard microprocessor maintains a steady temperature.
✓ Highly efficient, uses about half the propane of a 6-gallon tank.
✓ Built-in freeze protection for cold weather.
Why We Recommend It
It’s a classic for a reason. The quiet operation is a major bonus, and its efficiency is well-documented. It’s a “set it and forget it” unit from a brand with a long track record.
Best For
RVers who value a quiet campground experience, proven reliability, and significant propane savings over a traditional tank water heater.
Pros and Cons
Pros:
- Exceptionally quiet during operation.
- Great fuel efficiency.
- Consistent temperature control.
- Strong brand reputation and longevity.
Cons:
- Lower BTU than others on this list, may have a lower maximum flow in very cold conditions.
- Often comes at a premium price compared to newer brands.
Customer Reviews
Customer Review: “One year update….The unit is still running like a champ! I’m getting a 73°F rise across the unit in the winter time… I can find no fault with this unit.”
Customer Review: “My wife and I are Full Time RV’rs… After lots of research we opted to go tankless… I have to tell you the install was very easy. If you have just basic skills you can do it.”
8. VEVOR RV Tankless Water Heater with 42000 BTU 15×15 White Door Remote Controller and Optimized Comfort
VEVOR brings its reputation for value to the RV world. This heater offers smart features like seasonal temperature adjustment and a remote controller at a very competitive price.
Key Features That Stand Out
✓ Segmented combustion technology auto-adjusts for seasons.
✓ Convenient remote controller with LED display.
✓ Standard 15×15″ white door for easy replacement.
✓ Rapid 42,000 BTU heating.
Why We Recommend It
It’s a feature-packed unit that doesn’t cost a fortune. The remote control is a nice luxury, and the seasonal adjustment is a clever way to maximize comfort and efficiency year-round.
Best For
RVers who want modern conveniences like remote control and automatic seasonal adjustments without stepping into the premium price bracket.
Pros and Cons
Pros:
- Excellent value for the features offered.
- Convenient wireless remote control.
- Smart seasonal adaptation.
- Quick and easy installation as a direct replacement.
Cons:
- 42,000 BTU is adequate but not high-output.
- Brand may not have the long-term track record of others.
Customer Reviews
Customer Review: “Just moved off grid and after a month of no hot water this thing is a dream come true!… It was a 30 minute install… It works fine being cut off and on from power.”
Customer Review: “This water heater works perfectly fine, it’s got a perfect size and works fine apart from that. It is very easy to install and goes right into the spots same size as the one that was there…”
9. Ranein 65000 BTU RV Tankless Water Heater with High Altitude Support DC 12V and CSA-Certified Multi-function Controller
The Ranein “Nova” series boasts an upgraded multi-function controller that displays useful stats like gas usage and GPM. It’s designed as a universal replacement for most RV tank heaters.
Key Features That Stand Out
✓ Informative multi-function remote with system diagnostics.
✓ Deep fire row design for improved heating efficiency.
✓ CSA-certified controller for safety.
✓ Universal 12.8″ opening fits most standard RV water heater compartments.
Why We Recommend It
For the tech-savvy RVer who loves data, the detailed remote is a standout feature. Knowing your real-time GPM and usage can help you manage resources better on the road.
Best For
Users who appreciate detailed feedback from their appliances and want a powerful, direct-fit replacement unit with a high-tech feel.
Pros and Cons
Pros:
- Excellent diagnostic remote control.
- High efficiency deep flame burner.
- True universal fit for most RVs.
- Strong performance at high altitude.
Cons:
- The advanced remote has a learning curve.
- Some users report the need for very precise installation for optimal performance.
Customer Reviews
Customer Review: “Hello. First time Rv owner going full time… I did hours and hours of research and pulled the trigger on the Ranein Nova + 3rd gen. It arrived when expected, excellent packing & communication…”
Customer Review: “I took a seasonal job… at 6,800 feet elevation… Ground water around 45 degrees. I opted for this model as it was about 10k BTU more than the rest… I’m a professional hvac/r technician and appreciate the simple and effective design.”
10. VANSTON 6L Portable Propane Tankless Water Heater for RV Camping with Overheating Protection and Easy Installation
This isn’t a built-in unit; it’s a portable powerhouse. The VANSTON is perfect for tent camping, van lifers without built-in systems, or as a supplemental outdoor shower for any RVer.
Key Features That Stand Out
✓ Fully portable design with a folding handle.
✓ Lightweight (9 lbs) and compact.
✓ Low water pressure start (20 PSI) for off-grid use.
✓ Overheating protection for safety.
Why We Recommend It
It provides the freedom of tankless hot water anywhere. You’re not limited to your RV’s plumbing. Set it up outside your tent, van, or RV for washing dishes, showers, or gear.
Best For
Tent campers, off-grid adventurers, van builders, and RV owners who want a versatile, standalone hot water solution for outdoor use.
Pros and Cons
Pros:
- Ultimate portability and flexibility.
- Very easy to set up and use.
- Great for low-pressure water sources.
- Does not require permanent installation.
Cons:
- Lower flow rate (1.45 GPM) than built-in models.
- Requires manual connection to a water source and propane tank.
Customer Reviews
Customer Review: “This gauges the temperature perfectly and was easy to install. There are no leaks and it is a very nice looking tank. It’s functional and fits easily outside next to my pool.”
Customer Review: “A noticeable improvement over my previous Camplux. I paired it with an EV charger case for weather protection, and it performs flawlessly. I’m especially looking forward to using it during the Texas winter…”
Complete Buying Guide for Top 7 Best Tankless Hot Water Heaters For Rv
Essential Factors We Consider
Choosing the right RV tankless water heater is about more than just price. First, check the BTU rating. More BTUs mean hotter water or a higher flow rate, especially in cold weather. For most RVs, 55,000 to 65,000 BTU is a sweet spot. Next, ensure it fits! Measure your existing opening; 15×15 inches is standard, but some are 16×16 or 18×18. Look for high altitude support if you camp in the mountains. Finally, consider the power source: all need 12V DC from your RV battery and propane.
Budget Planning
Your budget should include the unit price, any necessary installation parts (like new plumbing fittings or venting), and potential professional help if you’re not a DIYer. While you can find capable models in the mid-range, remember that certifications like ETL or CSA add to cost but provide verified safety. Think of it as an investment in endless hot water and propane savings that will pay off over many camping trips.
Final Thoughts
Switching to a tankless system transforms your RV experience. No more scheduling showers or running out of hot water. The key is matching the heater’s power and features to your specific travel style. Whether you need the ultimate in power (APUS), versatile outdoor outlets (Poukaran), certified safety on a budget, or full portability (VANSTON), there’s a perfect model on this list for you.
Frequently Asked Questions
Q: Are tankless water heaters for RVs hard to install?
A: Most are designed as direct replacements for traditional tank heaters. If you’re comfortable with basic plumbing, electrical, and propane connections, it’s a manageable DIY project. Many come with templates and guides. If you’re unsure, hiring an RV technician is a smart choice for safety and peace of mind.
Q: Will a tankless water heater work with my RV’s existing plumbing?
A: In nearly all cases, yes. They connect to the same cold water inlet and hot water outlet as your old tank. The main differences are the need for a 12V power connection and, sometimes, a different venting setup. Always check the manufacturer’s specifications against your current system.
Q: Do tankless water heaters use less propane than traditional tanks?
A: Yes, significantly. A traditional tank heater constantly burns propane to keep a tank of water hot, even when you’re not using it (standing pilot light). A tankless heater only ignites when you turn on the hot water tap, burning fuel only for the duration of your shower or dishwashing. This on-demand operation is much more efficient.
Q: What does “high altitude support” mean?
A> At higher elevations, the air is thinner, which can affect how propane burns. Heaters with high altitude support have technology to adjust the air-to-fuel ratio, ensuring efficient and safe combustion. If you camp in the mountains, this is a critical feature.
Q: Can I use my RV tankless water heater in the winter?
A> Absolutely, but you must consider freeze protection. Many models have an anti-freeze mode that will cycle the pump if temperatures drop dangerously low to prevent internal damage. However, you still must properly winterize your RV’s entire water system if leaving it in freezing temperatures unused.
Upgrading your RV with a tankless hot water heater is a decision you’ll appreciate every day on the road. From the simple joy of a long, hot shower to the practicality of washing dishes with ease, it elevates the comfort of your mobile home. We’ve highlighted options for every need and budget, from our top-rated all-around pick to versatile and portable solutions. Your perfect match is on this list. Take the next step toward endless hot water and a better RVing experience by checking the latest prices and reviews for your favorite model today!
